Technology should serve both efficiency and ethics in mineral extraction.

I'm very proud to be black, but black is not all I am. That's my cultural historical background, my genetic makeup, but it's not all of who I am nor is it the basis from which I answer every question.

领导这件事是一个敏感的话题。很多领导者失败，因为他们没有足够的勇气去打破现状、振奋人心。在我的生涯中，我从没有这种担忧。

世界需要能源，但它比以往任何时候都更需要负责任的能源。

绘画的乐趣在于自由创造不存在的世界。